Bobrovsky was especially sharp in the first period before the Flyers took control.
The Blackhawks had the better scoring chances in the up-tempo, scoreless first. Bobrovsky made several quick, close-in saves, including ones on Jonathan Toews and Tomas Kopecky.
"[Bobrovsky] was in complete control," Laviolette said. "Never too far out of position. Not deep. There were no second opportunities. He was quick with his legs."
As the period progressed, Chicago's skating and puck possession game became more dominant. But Carter opened the scoring 49 seconds into the second to cap a lengthy goal-mouth scramble.
Crawford stopped Braydon Coburn's drive from the right point, but couldn't control the rebound. While Crawford was down in the crease, the Flyers managed several attempts that hit him or were blocked by the Blackhawks. Carter finally pushed the puck over the goal line to give the Flyers a 1-0 lead.
"It was a weird one," Carter said. "We missed about five times."
Philadelphia then tightened its play and coverage to slow down Chicago. Meanwhile, the Flyers generated several prime chances and ended up outshooting Chicago 19-9 in the period.
"They scored the all-important first goal," Chicago coach Joel Quenneville said. "They got the momentum and we couldn't get it back."
Zherdev made it 2-0 at 2:28 of the third when he scored on a wraparound. He circled the net and tucked in a shot from the left side before Crawford could cover the post.
Carter scored again just under three minutes later to extend the Flyers' lead to 3-0. He tipped in Giroux's centering pass in midair from the edge of the crease to complete a three-on-two break.
Hossa was awarded his penalty shot after Coburn closed his hand on the puck during a goal-mouth scrum. Hossa beat Bobrovsky between the legs with a wrist shot. He became the first Blackhawks player to score on a penalty shot in a home game since Troy Murray in 1987.
Hartnell completed the scoring with an empty-net goal with 52 seconds left.
The Flyers remain one of two NHL teams without a shutout. ... Giroux extended his point streak to six games and has two goals and eight assists in that span. ... Philadelphia LW James van Riemsdyk missed the game with a lower-body injury. ... Toews, Chicago's captain, was in the lineup. He sat out the end of the Blackhawks' 4-1 win at Detroit on Saturday after a collision in the third period. ... Sunday's game started at 11:30 a.m. and concluded just before the start of the NFC championship game between the Bears and Packers at Soldier Field.
Referees: Stephen Walkom, Ian Walsh Linesmen: Lonnie Cameron, Dan Schachte
Attendance: 21,660 (109.9% full)
Team Stat Comparison
Power Play Goals
Power Play Opportunities
Shots on Goal
No scoring this period
Jeff Carter (21)
Assists: Claude Giroux, Nikolay Zherdev
Nikolay Zherdev (15)
Assist: Claude Giroux
Jeff Carter (22)
Assist: Claude Giroux
Marian Hossa (11)
(Penalty Shot) Unassisted
Scott Hartnell (17)
(Empty Net) Assists: Jeff Carter, Claude Giroux
Marion Hossa's converted penalty shot in the third period on Sunday marked the first time that a Blackhawks player had converted a penalty shot in a home game since December 30, 1987. Troy Murray scored that day against the Minnesota North Stars. Chicago had missed its last 19 such opportunities. That also makes Sunday's goal the first Blackhawks penalty shot converted at the United Center (which opened in 1994).